“Pass-the-parcel” exceptions.

Hani makes a surprisingly unbilish point about wrapped exceptions Wrapping already wrapped exceptions isn’t the best idea in the world.

This technique reminds me of the children’s game of “Pass the Parcel”, where you put multiple layers of wrapping on a gift, and the children never know when they will reach the last one.

I’m as guilty of this as the next person, but I think in future I will modify the constructors of my wrapping exceptions so that if a cause already exists, it uses that as the cause, not the one supplied…

(FWIW, I’m not against wrapping exceptions; what is an ObjectNotFound at one layer is a ConfigurationException at another, and should be reflected as such).

This may, of course, just be a stupid idea, but it’s worth exploring.

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Author: Robert Watkins

My name is Robert Watkins. I am a software developer and have been for over 18 years now. I currently work for people, but my opinions here are in no way endorsed by them (which is cool; their opinions aren’t endorsed by me either). My main professional interests are in Java development, using Agile methods, with a historical focus on building web based applications. I’m also a Mac-fan and love my iPhone, which I’m currently learning how to code for. I live and work in Brisbane, Australia, but I grew up in the Northern Territory, and still find Brisbane too cold (after 16 years here). I’m married, with two children and one cat. My politics are socialist in tendency, my religious affiliation is atheist (aka “none of the above”), my attitude is condescending and my moral standing is lying down.

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